4*9-2x(x)=

Solution for 4*9-2x(x)= equation:

Simplifying
4 * 9 + -2x(x) = 0

Multiply 4 * 9
36 + -2x(x) = 0

Multiply x * x
36 + -2x2 = 0

Solving
36 + -2x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-36' to each side of the equation.
36 + -36 + -2x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -2x2 = 0 + -36
-2x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-2x2 = -36

Divide each side by '-2'.
x2 = 18

Simplifying
x2 = 18

Take the square root of each side:
x = {-4.242640687, 4.242640687}